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Finding the Fourth Proportional to 5,415.22, 8,123.12 and 1,717.74

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Solution

The fourth proportional to 5,415.22, 8,123.12 and 1,717.74 is: 2,576.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.22 : 8,123.12 = 1,717.74 : x
  2. Step 2: Convert to fraction form
    5,415.22/8,123.12 = 1,717.74/x
  3. Step 3: Cross multiply
    5,415.22x = 8,123.12 × 1,717.74
  4. Step 4: Simplify right side
    5,415.22x = 13,953,378.76
  5. Step 5: Solve for x
    x = 13,953,378.76/5,415.22
  6. Step 6: Final answer
    x = 2,576.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.